[Analysis of Priority Control Factors for Soil Heavy Metal Pollution in Villages Surrounding Historic Smelting Areas].
摘要
） of As， Sb， Ni， and Cd reached the medium pollution level， while 60% of the samples were in the light pollution level in the pollution load index （PLI）. The PMF source analysis study identified three soil heavy metal pollution sources， including natural sources， smelting activities， and industrial activities， contributing 50.27%， 30.21%， and 19.52%， respectively. The Monte Carlo probabilistic HRA showed that the carcinogenic risk for all populations was in the acceptable range （1E-06≤TCR<1E-04）； the non-carcinogenic risk for adults was negligible （HI<1）， and the non-carcinogenic risk for children was at a high level （HI>1）. The proportion of children with non-carcinogenic risk exceeding the control value was 48.35%. Smelting activity was the largest contributor to carcinogenic risk （69.22%） and non-carcinogenic risk （55.77%）， and smelting activity was identified as a priority source of contamination for human health risk control， with As being the main target pollutant. The results of the study can provide a scientific basis for governmental departments to formulate soil pollution control strategies.